Derrick.



6F. R. PATGII.y

' DERRIGK.

rAPPLIoM'IoN FILED JULY 22,1908.

Patented' sept. 29,

w h @3% mma mmm nas NaRRls PETERS cq., wAsHlNcran. D. c,

FREDR. PATCH, OF RUTLANI), VERMONT.

DEER/IGK.

' Specification of Letters Patent.

' Patented sept. 29, 1908.

' Application sled July 22, 1908. serial No. 444,838.

To'aZZ whom it may concern:

Be it known that I, FRED R. PATCH, citizen of the United States,residing at Rutland county of Rutland, and State' of Vermont, haveinvented certain .new and useful Improvements in Derricks, of which thefollowing is a specication, reference being had therein to theaccompanying drawing.

.This invention relates to a derrick, and particularly to a fall lineconnection for the main hoisting line from the boom.

The invention has for an object to provide a carriage disposed betweenthe base of the derrick mast and the hoisting power and connected withthe hoisting line carried by theA boom of the mast so as to ermit thelifting of the load to the desired height without necessa'filyincreasing the height of the mast, as the travel of the carriage uponthe ground may be for any desired extent necessary to secure the desiredlift at the upper end of the boom.

A further object of the invention is to provide a novel and improvedconstruction of carriage adapted for connection to the hoisting line andfall line and provided with heaves comprising-a fall -block in a tackleconnection between the hoist line and p ower.

Other and further objects and advantages of the invention will behereinafter fully set forth and the novel features .thereof defined bythe ap ended claims.

In the rawingr--Figure 1 is an elevation of the invention applied to aderrick; Fig. 2 is a plan of the carriage; Fig. 3 is an end elevation atthe left of Fig. 2. Fi 4 a plan and Fig. 5 an elevation of the fal lineconnection. 1-

Like numerals refer to like parts in the several views of the drawing.

The numeral 10 designates the mast of the derrick which may Ibe of anydesired construction and suitably supported in position by means of theguy ropes 11 extending therefrom to a fixed oint. This mast is ro.-vided at its base wit the usual bull whee 12 and has the boomk 13pivotally mounted thereon at 14, the upper end 15 of this boom beingconnected by tackle line 16 with the mast block 17 from whichconnectionthe boom fall line 18 extends to the hoisting power as indicated at 19.The. disposition of this power relative to the mast determines thearrangement of this line, for instance,it

may be carried by the block 20 disposed on the ost or mast 21 and thenceto the usual Win ing drum 22. The boom is provided at its u er end withthe bearing sheave 23 over whiclh the main hoistline extends. In thearrangementof the line here shown for heavy weights, one end thereof issecured to the boom at 25 'and the loop thereof carries the connectingblock'26 to which the weight is attached. In the lifting of lighterWeights this block maybe connected to the single end of the line asusual in the art. The stay line 24 passes over the sheave 27 at thelower end of the boom and thence over the guide sheave 28 at the base ofthe mast disposed to bring the linev 24 into a horizontal plane where itis attached to the carriage '29. From this carriage the fall line 30extends to the hoistingdruml31 of the line 30 being connected at 32 tothe carriage and extending thence to the xed tackle blocks 33 and thencereturning over the l sheaves 34 upon the carriage to the winding drum 31so as to secure the necessary pull and-length of lift for the loadrelative to the height of mast and boom. This carriage is mounted uponthe tracks or ways 35 supported in any desired manner and havingintermediate of the rails thereof at suitable oints horizontallydisposed bearing rollers 36 ada ted to support any slack in the fallline w en the same is being overhauled. These rollers are pivotallymounted in suitable blocks 37 at the opposite ends thereof.

The carriage 29 com rlses a frame formed of parallel longitudinal yextending stra s or bars 38 mounted upon the axles 39 which extendtransversely thereof. Upon the outer ends of these axles the carrierwheels 40 are mounted to travel on the tracks 35, while at one end ofthe carriage the frame bars 38 lare connected by'across bolt 41 with thehoist line connection 48./The opposite ends of4 these bars are spacedapart by blocks 42 and connected by cross pins 43. The sheaves 34 areeach rotatably mounted upon the axle 39 and may be 'arranged in anydesired position thereon relative to the multiple of the fall line to becarried by the carriage which forms the `fall block of the tackleconnection. the present illustration two sheaves are disposed upon eachaxle of the carriage. These sheaves are each surrounded by a line shieldor guard 44 by which the fall line is retained in properl positionthereon and prevented from disengagement. The shields are mounted uponthe frame at one side of the axles and completely surround a portion ofthe sheaves 34. The frame is also provided at 45 with a track lockextending downward therefrom, as shown in Figs. 2 and 3 to engagebeneath the tread of the rails 35 and thus prevent either lateral orvertical displacement of the carriage froml the rails under hoistingstrain.

Any desired means for overhauling or the return movement of the carriagemay be provided, such, for instance, as the weight of the blocks orconnections carried by the main hoisting line, but a desirableconnection for providing a positive overhauling action is securedthrough the overhaul line 50 which is attached to the carriage at 5l andextends over a -block 52 fixed adjacent the base of the mast and thenceextends to the winding drum 53 which may be controlled in any manner. Itis here shown as mounted upon the shaft of the drum 31 and of lessdiameter.

In order to secure the necessary direction of travel of these lines themain hoist rope is attached to the under side of its drum and theoverhaul rope attached to the upper side of its drum so that when one iswinding in the other is playing out.

In the operation of the invention it will be seen that the fall linetackle provides the necessary pull for the hoist rope carried by theboom and may be formed of any desired length so as to secure the maximumlength of lift of which the predetermined lengthl of the boom is capablewithout requiring additional height of the mast which has heretoforebeen necessary when the fall line was disposed thereon thus materiallyeconomizing in the cost of the derrick and providing a more emcient,substantial and accessible disposition of the fall block, as thecarriage arrangement provides for any desired multiple of the fall linethereon and exerts the minimum of friction in its operation. By a properarrangement of the tackle between the hoisting power and carriage alimited travel of this carriage upon the track can be utilized to effectthe desired height of lift. The construction of this carriage alsoprovides means by which the sheaves are directly mounted upon the axlesthereof and the rope retained thereon by shields, while any movementlaterally or vertically is resisted by the track locks. During thehoisting operation the carriage moves toward the hoisting power and inthe overhauling or return movement the necessary power is provided bythe overhaul line. While the track has been herein shown as extendingfrom the derrick to the power this is not necessary in all cases as thetrack need only be of sufficient length to obtain the height of liftdesired and can be dis osed at any desired points intermediate orIbetween the mast base and power.

Having described my invention and set forth its merits, what l claim anddesire to secure by Letters Patent is 1. A derrick comprising a mast andboom, a hoist line extending from the outer end of said boom to the baseof said mast, a hoisting power, a carriage connected with said line andmounted to travel between the mast base and power, and a tackleextending between said carriage and power.

2. A derrick comprising a mast and a boom, a hoist line extending fromthe outer end of said boom to the base of said mast, a hoisting power, acarriage connected with said line and mounted to travel between saidmast base and power, and a tackle extending from said carriage over afixed block and thence over a sheave upon said carriage to said power.

3. A derrick comprising a mast and a boom, a hoist line extending fromthe outer end of said boom to thebase of said mast, a hoisting power, acarriage connected with said line and mounted to travel between the mastbase and power, a tackle extending between said carriage and power,track rails for said carriage, and bearing rollers intermediate of saidrails.

4. A derrick comprising a mast, a boom pivoted thereon and having aguide sheave at each end, a hoist line extending over said sheaves tothe base of the mast, a hoisting power, a carriage connected to saidline and mounted to travel between the mast base and power, and aconnection between said carriage and power.

` 5. A derrick comprising a mast, a boom pivoted thereon and having aguide shcave at each end, a hoist line extending over said sheaves tothe base of the mast, a hoisting power, a carriage connected to saidline and mounted to travel between the mast base and power, tacklesheaves mounted upon said carriage, and a tackle extended between saidcarriage and power.

6. In a derrick, a fall block carriage comprising a frame having an axlemounted thereon, carrier wheels on said axle, a sheave rotatably mountedon said axle, and hoist and power line connections with said carriage.

'7. In a derrick, a fall block carriage comprising a frame, an axlemounted thereon, carrier wheels on said axle, a sheave rotatably mountedon said axle, hoist and power line connections with said carriage, and ashield surrounding said sheave.

8. In a derrick, a fall block carriage comprising a frame having an axlemounted thereon, carrier wheels on said axle, a sheave rotatably mountedon said axle, hoist and power line connections with said carriage, and atrack lock mounted upon said carriage and extended beneath the tread ofone of the rails upon which said carriage travels.

9. In a'derrick, a fall block carriage comprising a frame formed ofarallel members connected together at eac end, hoist and fall lineconnections with said frame, axles mounted in said frame and providedwith carrier wheels, and sheaves mounted upon said axles intermediate ofthe parallel frame members. n

10. In a derrick, a fall block' carriage comprising a frame formed ofarallel members connected together at eac end, hoist and Jfall lineconnections with said frame, axles mounted in said frame and providedwith carrier wheels, sheaves mounted upon said axles intermediate of theparallel frame members, and shields surrounding a portion of saidsheaves and supported bythe frame at one side of the axis ofthe sheave.

11. In a derrick, a fall block carriage comprising a frame formed ofarallel members connected together at each) end, hoist and fall lineconnections with said frame, axles mounted in said frame and providedwith carrier wheels, sheaves mounted upon said axles intermediate oftheparallel frame members, shields surrounding a portion of said sheavesand supported by the frame at one side ofthe axis ofthe sheave.

12. Ina derrick,- a mast and boom, a hoist line extending from the outerend of the boom to the base of the mast, a hoisting power, a trackdisposed between said'power and mast base, a carriage mounted upon saidtrack and connected at one end with said line7 and a tackle connection.between the opposite end'of said carriage and said power.

13. In a derrick, a mast and boom, a hoist line extending from the outerend of the boom to the base of the mast, a hoisting power, a trackdisposed between said power and mast base, a carriage mounted upon saidtrack and connected at one end with said line, sheaves rotatably mountedupon said carriage, and a tackle connection extending from one end ofsaid carriage over a fixed block and thence over the sheave upon saidcarriage to the power.

14. In a derrick, a mast and boom, a hoist line extending from the outerend of the boom to the base of the mast, a hoisting power, a trackdisposed between said power and mast base, a carriage mounted upon saidtrack and connected at one end with said line, sheaves rotatably mountedupon said carriage, a tackle connection extending from one end ofcarriage over a iixed block and thence over the sheave upon saidcarriage to the power, and means carried by said carriage to preventvertical and lateral movement thereofupon the track rails.

15. A derrick comprising a mast and boom, a hoist line extending fromsaid boom to the base of said mast, a hoisting power, a carriageconnected with said line, a tackle extending between said carriage andpower, and an overhaul line extending from said carriage over a blockadjacent the mast and thence to a power device.

In testimony whereof I affix my signature in presence of two witnesses.

FRED R. PATCH.

Witnesses:

T. A. 4REARDON, F. H. RICH.

